Download Study Topics for Exam 3

PHYS 100 Introductory Physics
Dr. Labroo
Study Topics for Exam 3
Chapter 6
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Charge – an inherent property of matter. Atomic structure and the smallest units of charge.
Properties of charges: conservation and the Coulomb force.
Charging by friction and induction.
Concept of the electric field and its relation to the Coulomb force:
Force
Electric Field 
Charge
The distinction between electric potential energy and electric potential. Simple problems based on
the use of the following definition:
Electric Potential Energy
Electric Potential 
Charge
Units of charge, electric potential energy and electric potential.
Chapter 7
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Electric current as the flow of charge.
Voltage sources as “electrical pumps”. Creation of potential difference by a battery.
Current in a simple circuit. Ohm’s law – Simple problems based on the following:
Voltage
Current 
Resistance
Description of electrical resistance and the units of current, voltage and resistance.
Direct (DC) and alternating (AC) currents.
Electric power as the rate at which electric energy is transformed. Relationship between power,
current and voltage in a circuit:
Power  Current x Voltage
Kilowatt-hour as another unit of energy.
Electric circuits: series and parallel connection. Main differences between them and consequences.
Chapter 8
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Magnetic fields, magnetic poles and their properties.
Moving charge as a cause for the magnetic field.
Magnetic fields produced by current carrying wires. Straight wire and a loop of wire.
Force (Lorentz force) experienced by a charge moving through a magnetic field. The right hand
rule to determine the direction of Lorentz force.
Applications such as electric motor, loudspeakers, northern lights etc.
A good understanding of the principle of electromagnetic induction and induced voltage.
Conceptual understanding of the Faraday’s law.
Applications such as generators, transformers etc.